公开(公告)号：US20060173297A1

公开(公告)日：2006-08-03

申请号：US11274205

申请日：2005-11-16

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： A61B6/00

CPC分类号： A61B6/481 ,  A61B6/032 ,  A61B6/504 ,  A61B6/507 ,  A61B6/541

摘要： An imaging method and an apparatus are disclosed for visualizing coronary heart diseases. An imaging tomographic technique is used to record and reconstruct one or more images of the heart or a region of the heart after a contrast agent injection. In the method, in a late period after the contrast agent injection, at least one first image of at least one part of the myocardium is recorded in which a maximum in a contrast agent flow caused by the contrast agent injection occurs, or is to be expected, in the myocardium. Subsequently the first image and/or at least one image derived from the first image for the purpose of better recognizability of a local undersupply of the myocardium are/is displayed. The method and/or the associated apparatus may enable the detection of vascular occlusions or vascular constrictions even in the case of relatively small vessels, which cannot be resolved with the aid of the conventional coronary CTA.

摘要翻译： 公开了用于可视化冠心病的成像方法和装置。 成像断层摄影技术用于在造影剂注射之后记录和重建心脏或心脏区域的一个或多个图像。 在该方法中，在造影剂注射后的后期，记录至少一部分心肌的至少一个第一图像，其中由造影剂注射引起的造影剂流中的最大值发生，或将是 预期，在心肌中。 随后，为了更好地识别出心肌供应不足的目的，显示了从第一图像得到的第一图像和/或至少一个图像。 即使在相对小的血管的情况下，该方法和/或相关联的装置也可以检测血管闭塞或血管收缩，这在常规冠状动脉CTA的帮助下不能解决。

公开(公告)号：US20060109951A1

公开(公告)日：2006-05-25

申请号：US11257694

申请日：2005-10-25

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： H05G1/60 ,  A61B6/00 ,  G01N23/00 ,  G21K1/12

CPC分类号： H05G1/46 ,  A61B6/032 ,  A61B6/405 ,  A61B6/482 ,  A61B6/542 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： In a tomography apparatus and a method for operating a tomography apparatus for generation of multiple energy images, in which high-energy projections and low-energy projections are acquired by alternating adjustment of a voltage and a further control variable (namely the current or the exposure time), given a set first voltage value and a set first control value of the further control variable, and given a set second voltage value and a set second control value of the further control variable, x-rays generated by an x-ray radiator exhibit essentially the same x-ray dose or photon flow.

摘要翻译： 在用于生成多能量图像的层析摄影装置和操作方法中，通过交替调整电压和另外的控制变量（即电流或曝光）来获取高能量投影和低能量投影 时间），给定设定的第一电压值和另一个控制变量的设定的第一控制值，并给出另外的控制变量的设定的第二电压值和设定的第二控制值，由x射线辐射器产生的x射线 表现出基本上相同的x射线剂量或光子流。

公开(公告)号：US20050281371A1

公开(公告)日：2005-12-22

申请号：US11148769

申请日：2005-06-09

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： A61B6/00 ,  A61B6/03

CPC分类号： A61B6/032 ,  A61B6/4014 ,  A61B6/4021 ,  A61B6/4085

摘要： An imaging tomography apparatus, in particular an x-ray computed tomography apparatus, has two acquisition systems capable of rotating around a rotation center on a common rotation axis with constant azimuthal separation from one another. Each of the acquisition systems has a radiator with a focus as well as a detector with a number of detector elements. The detectors are mounted in the respective acquisition system such that, after a common rotation movement of both acquisition systems (which transfers the imaginary connecting line “first focus—rotation center” to the previous position of the imaginary connecting line “second focus—rotation center”), at least some of the detector elements of the first detector come to lie displaced by a displacement angle with regard to the previous positions of the detector elements of the second detector.

摘要翻译： 成像断层摄影装置，特别是X射线计算机断层摄影装置，具有两个采集系统，能够在共同的旋转轴线周围以恒定的方位分离方式围绕旋转中心旋转。 每个采集系统具有聚焦的散热器以及具有多个检测器元件的检测器。 检测器安装在相应的采集系统中，使得在两个采集系统（其将虚拟连接线“第一聚焦旋转中心”传送到虚拟连接线的先前位置“第二聚焦旋转中心）的公共旋转运动之后 “），第一检测器的至少一些检测器元件相对于第二检测器的检测器元件的先前位置偏移位移角。

公开(公告)号：US20050169263A1

公开(公告)日：2005-08-04

申请号：US10992859

申请日：2004-11-19

申请人： Joachim Grottel ,  Klaus Gruber ,  Stefan Popescu

发明人： Joachim Grottel ,  Klaus Gruber ,  Stefan Popescu

IPC分类号： H04L12/28 ,  A61B6/00 ,  A61B6/03 ,  H04J3/24 ,  H04L5/22 ,  H04L12/40 ,  H04L12/413 ,  H04L12/56

CPC分类号： H04J3/247

摘要： In a method and system for data and signal transfer between different sub-units of a medically-related system, in particular a CT system, digitized signals and digital data are transmitted together on a transmission line by means of serial multiplexing. The digitized signals and the digital data are transferred combined into individual packets having a length that is so small that the adherence to a predetermined updating rate of the signals is achieved. The expenditure for the wiring as well as for future expansions in medically-related systems can be significantly reduced.

摘要翻译： 在用于医疗相关系统的不同子单元之间的数据和信号传输的方法和系统中，特别是CT系统，数字化信号和数字数据通过串行复用在传输线上一起发送。 将数字化信号和数字数据组合成具有如此小的长度的单独分组，以使得能够实现对信号的预定更新速率的依从性。 医疗相关系统的布线支出以及未来的扩张可以大大减少。

公开(公告)号：US20050058249A1

公开(公告)日：2005-03-17

申请号：US10660146

申请日：2003-09-11

申请人： Heiko Wolf ,  Christoph Sub ,  Stefan Popescu

发明人： Heiko Wolf ,  Christoph Sub ,  Stefan Popescu

IPC分类号： A61B6/03 ,  G01N23/00 ,  G01N23/06 ,  H05G1/34 ,  H05G1/44 ,  H05G1/50

CPC分类号： A61B6/032 ,  A61B6/488 ,  A61B6/542 ,  A61B6/544

摘要： In a method for controlling the modulation of the tube current of an X-ray tube in the production of images using computed tomography, a single topogram of the examination subject is obtained and an orthogonal attenuation value is calculated therefrom, also making use of geometrical information associated with the position of the table on which the examination subject is disposed. In a subsequently-obtained computed tomography scan, the tube current is controlled using the orthogonal patient attenuation.

摘要翻译： 在使用计算机断层摄影技术在图像生成中控制X射线管的管电流的调制的方法中，获得检查对象的单个地形图，并且还利用几何信息来计算正交衰减值 与检查对象所在的表的位置相关联。 在随后获得的计算机断层摄影扫描中，使用正交患者衰减来控制管电流。

公开(公告)号：US20050005206A1

公开(公告)日：2005-01-06

申请号：US10846257

申请日：2004-05-14

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： A61B6/03 ,  A61B6/00 ,  H04L1/24 ,  H05G1/54 ,  G06F11/00

CPC分类号： H04L1/24 ,  A61B6/56 ,  H05G1/54

摘要： In a system and an associated method, for data transmission in a computed tomography device, having a data acquisition unit in which measurement data are acquired, converted into a bit stream, and communicated to a transmitter apparatus on a rotating part of the computed tomography device, wherein the transmitter transmits the bit stream to a stationary part of the computed tomography device, and having a receiver apparatus on the stationary part that receives the bit stream from the transmitter apparatus and communicates it to an image reconstruction unit that further processes the bit stream communicated by the receiver apparatus for the reconstruction of the image, the transmitter apparatus and the receiver apparatus each have an error recognition module that monitors the bit stream for errors and signals recognized errors to an error processor that determines the number and rate and/or duration of the recognized errors and stores these in a log data file for an evaluation. Errors thus can be recognized in real time and can be used for error diagnosis without the use of an additional testing tool.

摘要翻译： 在用于计算机断层摄影装置中的数据传输的系统和相关方法中，具有数据获取单元，其中获取测量数据，转换成比特流，并在计算机断层摄影装置的旋转部分上传送到发射机装置 ，其中所述发射机将所述比特流发送到所述计算机断层摄影装置的静止部分，并且在所述静止部分上具有从所述发射机装置接收所述比特流的接收机装置，并将其传送到进一步处理所述比特流的图像重建单元 由接收机装置通信用于图像的重建，发射机装置和接收机装置各自具有错误识别模块，该错误识别模块监视比特流的错误并将识别的错误信号发送到确定数量和速率和/或持续时间的错误处理器 的识别错误并将其存储在用于评估的日志数据文件中。 因此，可以实时识别错误，并且可以在不使用附加测试工具的情况下用于错误诊断。

公开(公告)号：US06744846B2

公开(公告)日：2004-06-01

申请号：US10255356

申请日：2002-09-26

申请人： Stefan Popescu ,  Christoph Suess ,  Heiko Wolf ,  Dietmar Hentschel

发明人： Stefan Popescu ,  Christoph Suess ,  Heiko Wolf ,  Dietmar Hentschel

IPC分类号： A61B600

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/542 ,  A61B6/544 ,  H05G1/34

摘要： In a computed tomography apparatus and a method for automatic exposure control in computed tomography scanning, an exposure controller, during a first half of a revolution of an X-ray focus around a subject, calculates an actual attenuation profile of a slice of the subject from electrical signals generated by the radiation detector in the first half of the revolution, and calculates an extrapolated attenuation profile of the slice for a second half of the revolution from the actual attenuation profile, and adjusts an operating parameter of the X-ray source, such as the tube current, to modify the radiation dose emitted by the X-ray source during the second half of the revolution dependent on the extrapolated attenuation profile.

摘要翻译： 在计算机断层摄影装置和计算机断层摄影扫描中的自动曝光控制的方法中，曝光控制器在被摄体周围的X射线焦点的旋转的前半部分期间计算被摄体的切片的实际衰减曲线 在旋转的前半部分由辐射检测器产生的电信号，并且根据实际衰减曲线计算出旋转的后半部分的切片的外推衰减曲线，并且调整X射线源的操作参数， 作为管电流，根据外推的衰减分布来修改在旋转的后半段期间由X射线源发射的辐射剂量。

公开(公告)号：US06507639B1

公开(公告)日：2003-01-14

申请号：US09945521

申请日：2001-08-30

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： A61B600

CPC分类号： A61B6/542 ,  A61B6/032 ,  H05G1/30

摘要： In a method for modulating a radiation dose from an x-ray tube, and in an x-ray tube-containing apparatus, the x-ray tube has at least one variable operating parameter which, when varied, modulates the radiation dose, with a modulation speed, for x-rays produced by the x-ray tube, and the x-ray tube is operated while varying this parameter through a parameter range to generate modulation speed data, representing modulation speeds of the x-ray tube respectively for different values of the operating parameter. When an examination subject is to be irradiated with an x-ray dose from the x-ray tube, an exposure effect associated with the exposure of the subject to the radiation dose is identified, this exposure effect being dependent on modulation of the radiation dose. When exposing the subject to the radiation dose, the operating parameter is varied in advance of a time at which the exposure effect is to be achieved, dependent on the modulation speed data, so that the radiation dose is modulated to produce the desired exposure effect at the desired time.

摘要翻译： 在用于调制来自X射线管和X射线管的装置中的辐射剂量的方法中，X射线管具有至少一个可变操作参数，当变化时，X射线管调制辐射剂量， 对于由X射线管产生的x射线的调制速度和X射线管在通过参数范围改变该参数的同时进行操作，以产生分别表示不同值的X射线管的调制速度的调制速度数据 的操作参数。 当要从X射线管照射X射线剂量的检查对象时，识别与受试者暴露于辐射剂量相关的暴露作用，该曝光效果取决于辐射剂量的调制。 当将受试者暴露于辐射剂量时，操作参数取决于调制速度数据而在要实现曝光效果的时间之前改变，使得辐射剂量被调制以产生期望的曝光效果 所需时间。

公开(公告)号：US06501828B1

公开(公告)日：2002-12-31

申请号：US09692231

申请日：2000-10-20

申请人： Stefan Popescu

发明人： Stefan Popescu

IPC分类号： G21K104

CPC分类号： A61B6/06 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612

摘要： An x-ray apparatus has an x-ray source and an x-ray receiver, the x-ray source being adjustable relative to a subject and emitting x-rays in the direction toward the x-ray receiver during the course of radiological exposures of the subject. The x-ray apparatus has an arrangement in the beam path of the x-rays for influencing the shape and/or the intensity profile of the x-ray beam, and this arrangement is dynamically adjustable during radiological exposures of the subject for influencing the shape and/or the intensity profile of the x-rays.

摘要翻译： X射线装置具有x射线源和X射线接收器，X射线源可相对于被摄体调节，并且在放射线照射过程中朝向x射线接收器的方向发射X射线 主题。 x射线设备在x射线的光束路径中具有用于影响x射线束的形状和/或强度分布的布置，并且这种布置在受试者的放射线照射期间是可动态调节的，以影响形状 和/或x射线的强度分布。

公开(公告)号：US09733322B2

公开(公告)日：2017-08-15

申请号：US14287662

申请日：2014-05-27

申请人： Donald Hardie ,  Stefan Popescu

发明人： Donald Hardie ,  Stefan Popescu

IPC分类号： G01V3/00 ,  G01R33/34 ,  G01R33/36 ,  A61B5/055 ,  G01R33/3415

CPC分类号： G01R33/34 ,  A61B5/055 ,  G01R33/3415 ,  G01R33/3692

摘要： Described is a local coil having a number of magnetic resonance antenna elements, a, strip-shaped, metamaterial signal conductor, and an adapter device for coupling signals into the metamaterial signal conductor and/or coupling signals out of the metamaterial signal conductor. Additionally described is a magnetic resonance system having a local coil communication interface and an adapter device for coupling signals out of a metamaterial signal conductor and transferring them to the local coil communication interface and/or for coupling signals from the local coil communication interface into a metamaterial signal conductor, and a method for transmitting signals between a local coil and a local coil communication interface of a magnetic resonance system.